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Workshop

Introductory Workshop: Geometric and Topological Combinatorics September 05, 2017 - September 08, 2017
Registration Deadline: September 08, 2017 13 days ago
To apply for Funding you must register by: June 05, 2017 4 months ago
Parent Program:
Location: MSRI: Simons Auditorium, Atrium
Organizers Imre Barany (Renyi Institute of Mathematics), Anders Björner (Royal Institute of Technology (KTH)), LEAD Benjamin Braun (University of Kentucky), Isabella Novik (University of Washington), Francis Su (Harvey Mudd College), Rekha Thomas (University of Washington)
Speaker(s)

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Description
The introductory workshop will present the main topics that will be the subject of much of the Geometric and Topological Combinatorics Program at MSRI.  Key areas of interest are point configurations and matroids, hyperplane and subspace arrangements, polytopes and polyhedra, lattices, convex bodies, and sphere packings. This workshop will consist of introductory talks on a variety of topics, intended for a broad audience.  Bibliography (PDF) Group Photo
Show Tags and Subject Classification
Tags/Keywords
  • combinatorics

  • point configurations and matroids

  • hyperplane and subspace arrangements

  • polytopes and polyhedra

  • lattices

  • convex bodies

  • and sphere packings

Primary Mathematics Subject Classification
Secondary Mathematics Subject Classification No Secondary AMS MSC
Funding & Logistics Show All Collapse

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To apply for funding, you must register by the funding application deadline displayed above.

Students, recent Ph.D.'s, women, and members of underrepresented minorities are particularly encouraged to apply. Funding awards are typically made 6 weeks before the workshop begins. Requests received after the funding deadline are considered only if additional funds become available.

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MSRI has a preferred rates at the Hotel Shattuck Plaza, depending on room availability. Guests can call the hotel's main line at 510-845-7300 and ask for the MSRI- Mathematical Science Research Institute discount. To book online visit this page. Click on "Promo/Corporate Code" at the top of the page and enter the code MSRI (this code is not case sensitive).

MSRI has preferred rates at the Graduate Berkeley, depending on room availability. Reservations may be made by calling 510-845-8981. When making reservations, guests must request the MSRI preferred rate. Enter in the Promo Code MSRI (this code is not case sensitive).

MSRI has preferred rates at the Berkeley Lab Guest House, depending on room availability. Reservations may be made by calling 510-495-8000 or directly on their website. Select "Affiliated with the Space Sciences Lab, Lawrence Hall of Science or MSRI." When prompted for your UC Contact/Host, please list Chris Marshall (coord@msri.org).

MSRI has a preferred rates at Easton Hall and Gibbs Hall, depending on room availability. Guests can call the Reservations line at 510-204-0732 and ask for the MSRI- Mathematical Science Research Inst. rate. To book online visit this page, select "Request a Reservation" choose the dates you would like to stay and enter the code MSRI (this code is not case sensitive).

Additional lodging options may be found on our short term housing page.

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Schedule
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Sep 05, 2017
Tuesday
09:00 AM - 09:15 AM
  Welcome
09:15 AM - 10:15 AM
  Matroids and Tropical Geometry
Federico Ardila (San Francisco State University)
10:15 AM - 10:45 AM
  Break
10:45 AM - 11:45 AM
  Polynomial equations and polyhedra
Josephine Yu (Georgia Institute of Technology)
11:45 AM - 12:30 PM
  Introductions by junior participants
12:30 PM - 02:00 PM
  Lunch
02:00 PM - 03:00 PM
  Unimodualr triangulations of lattice polytopes
Francisco Santos (University of Cantabria)
03:00 PM - 03:30 PM
  Tea
03:30 PM - 04:30 PM
  Order, geometrically
Raman Sanyal (Johann Wolfgang Goethe-Universität Frankfurt)
Sep 06, 2017
Wednesday
09:00 AM - 10:00 AM
  Shape of Associativity
Satyan Devadoss (University of San Diego)
10:00 AM - 10:30 AM
  Break
10:30 AM - 11:30 AM
  f-vectors of polytopes and simplicial complexes, part I: results and problems
Eran Nevo (The Hebrew University of Jerusalem)
11:30 AM - 12:30 PM
  f-vectors of simplicial complexes and polytopes, part II: methods
Martina Juhnke-Kubitzke (Universität Osnabrück)
12:30 PM - 02:00 PM
  Lunch
02:00 PM - 03:00 PM
  Ehrhart positivity
Fu Liu (University of California, Davis)
03:00 PM - 03:30 PM
  Tea
03:30 PM - 04:30 PM
  Ehrhart Unimodality and Simplices for Numeral Systems
Liam Solus (Royal Institute of Technology (KTH))
04:30 PM - 06:20 PM
  Reception
Sep 07, 2017
Thursday
09:00 AM - 10:00 AM
  Equivariant Methods in Discrete Geometry: Problems and Progress
Günter Ziegler (Freie Universität Berlin)
10:00 AM - 10:30 AM
  Tea
10:30 AM - 11:30 AM
  Linear versions of Tverberg's theorem: Progress and problems
Pablo Soberón (Northeastern University)
11:30 AM - 12:30 PM
  Hypertrees
Nathan Linial (Hebrew University)
12:30 PM - 02:00 PM
  Lunch
02:00 PM - 03:00 PM
  Random Simplicial Complexes
Matthew Kahle (Ohio State University)
03:00 PM - 03:30 PM
  Tea
03:30 PM - 04:30 PM
  Cutting Cakes with Combinatorial Fixed Point Theorems
Kathryn Nyman (Willamette University)
Sep 08, 2017
Friday
09:00 AM - 10:00 AM
  Linear lifts and nonnegative factorizations
Samuel Fiorini (Université Libre de Bruxelles)
10:00 AM - 10:30 AM
  Tea
10:30 AM - 11:30 AM
  Positive semidefinite lifts and factorizations
João Gouveia (University of Coimbra)
11:30 AM - 12:30 PM
  Working Time
12:30 PM - 02:00 PM
  Lunch
02:00 PM - 03:00 PM
  Spectrahedra
Cynthia Vinzant (North Carolina State University)
03:00 PM - 03:30 PM
  Tea
03:30 PM - 04:30 PM
  The Crossing Lemma Revisited
Janos Pach (École Polytechnique Fédérale de Lausanne (EPFL))